pt-eustack-resolver¶

NAME¶

pt-eustack-resolver - Get stack traces for a selected program with eu-stack and resolve symbols.

SYNOPSIS¶

Usage¶

pt-eustack-resolver <pid>

pt-eustack-resolver collects stack traces for the process with specified pid.

RISKS¶

Percona Toolkit is mature, proven in the real world, and well tested, but all database tools can pose a risk to the system and the database server. Before using this tool, please:

Read the tool’s documentation
Review the tool’s known “BUGS”
Test the tool on a non-production server
Backup your production server and verify the backups

DESCRIPTION¶

pt-eustack-resolver is the tool that gets stack traces for a selected program with eu-stack and resolves symbols. This is companion tool for pt-pmp, called when option --dumper=pteu is specified.

eu-stack is a tool from elfutils package that prints a stack for each thread in a process or core file. eu-stack is faster than gdb and have smaller overhead on the diagnosed process.

OUTPUT¶

Stack for each thread, formatted similarly to gdb thread apply all bt output.

ATTENTION¶

Using <PTDEBUG> might expose passwords. When debug is enabled, all command line parameters are shown in the output.

SYSTEM REQUIREMENTS¶

You need eu-stack from the elfutils package.

BUGS¶

For a list of known bugs, see https://jira.percona.com/projects/PT/issues.

Please report bugs at https://jira.percona.com/projects/PT. Include the following information in your bug report:

Complete command-line used to run the tool
Tool --version
MySQL version of all servers involved
Output from the tool including STDERR
Input files (log/dump/config files, etc.)

If possible, include debugging output by running the tool with PTDEBUG; see “ENVIRONMENT”.

DOWNLOADING¶

Visit http://www.percona.com/software/percona-toolkit/ to download the latest release of Percona Toolkit. Or, get the latest release from the command line:

wget percona.com/get/percona-toolkit.tar.gz

wget percona.com/get/percona-toolkit.rpm

wget percona.com/get/percona-toolkit.deb

You can also get individual tools from the latest release:

wget percona.com/get/TOOL

Replace TOOL with the name of any tool.

AUTHORS¶

Alexey Stroganov

ACKNOWLEDGMENTS¶

Part of code for symbol resolving derived from resolve-stack-traces.pl script (https://github.com/knielsen/knielsen-pmp)

ABOUT PERCONA TOOLKIT¶

This tool is part of Percona Toolkit, a collection of advanced command-line tools for MySQL developed by Percona. Percona Toolkit was forked from two projects in June, 2011: Maatkit and Aspersa. Those projects were created by Baron Schwartz and primarily developed by him and Daniel Nichter. Visit http://www.percona.com/software/ to learn about other free, open-source software from Percona.

COPYRIGHT, LICENSE, AND WARRANTY¶

THIS PROGRAM IS PROVIDED “AS IS” AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2; OR the Perl Artistic License. On UNIX and similar systems, you can issue `man perlgpl’ or `man perlartistic’ to read these licenses.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

VERSION¶

pt-eustack-resolver 3.6.0